uva 537 Artificial Intelligence?

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<algorithm>
using namespace std;
#define N 10000
int main()
{
int T;
scanf("%d", &T);
getchar();
for(int g = 1; g <= T; g++)
{
char a
;
gets(a);
int len = strlen(a);
int i=0, u=0, p=0;
double I, U, P;
for(int j = 0; j < len; j++)
{
if(a[j]=='U'&&a[j+1]=='=')
{
U = atof(&a[j+2]);
u=1;
int k = j;
while(a[k]!='V')
{
k++;
}
if(a[k-1]=='m')
U /= 1000.0;
if(a[k-1]=='k')
U *= 1000.0;
if(a[k-1]=='M')
U *= 1000000.0;
}
if(a[j]=='I'&&a[j+1]=='=')
{
I = atof(&a[j+2]);
i = 1;
int k = j;
while(a[k]!='A')
{
k++;
}
if(a[k-1]=='m')
I /= 1000.0;
if(a[k-1]=='k')
I *= 1000.0;
if(a[k-1]=='M')
I *= 1000000.0;
}
if(a[j]=='P'&&a[j+1]=='=')
{
P = atof(&a[j+2]);
p = 1;
int k = j;
while(a[k]!='W')
{
k++;
}
if(a[k-1]=='m')
P /= 1000.0;
if(a[k-1]=='k')
P *= 1000.0;
if(a[k-1]=='M')
P *= 1000000.0;
}
}
if(i&&u)
{
printf("Problem #%d\n", g);
printf("P=%.2fW\n\n", I*U);
}
if(i&&p)
{
printf("Problem #%d\n", g);
printf("U=%.2fV\n\n", P/I);
}
if(u&&p)
{
printf("Problem #%d\n", g);
printf("I=%.2fA\n\n", P/U);
}

}
return 0;
}